Deep-well-drilling apparatus



LEMQ

Een., 9 i953@- o. DUDA DEEP WELL DRLLING APPARATUS F11-ed May 11.. 1922Patented DecQS, 1924.

UNITE STATES PATENT. FFI'CE.

DSWAL) DUDA, OF HOUSTON, TEXAS., ABSIGNOR, BY HESNE ASSIGNMENTS, T REEDROLLER BIT GOMBANY, .A CRPOBATION.

DEEP-WELL-DBELING APPARATUS.

Application led Hay 11, 1822. I Serial No. 560,163.

To all whom t may concern.'

Be it known that I, OswALnDUDA, a cit;- zenof the United States, vandresident of Houston, in the co'unty of Harms, 1n the State of Texas,have invented certain new and useful Improvements in Deep-Well- DrillingApparatus, of which the following is a specificatwn.

The invention relates to deep well drilling apparatus and particularlyto means for pumping lubricant tothe cutters thereof. The 'pump isembodied in the apparatusitself and derives its power from the motion ofthe apparatus in the wall.

The invention consists in the features and combination and arrangementof parts hereinafter described and particularly pointed out in thcclaims.l

In the drawings- F ig. 1 is a central, vertical sectional view of theapparatus, it being noted, however, that the section through the cuttersis taken upon'two planes at 90 apart in relation to each other-,so thatone of the inclined rotary cutters appears and also one-half of thecross roller cutter is shown.

' Figi@ is a vertical sectional view on an enlarged scale of the pumpingapparatus combined with a portion of the lubricant holder.

In these drawings- 1 indicates the drill stem; 2, one of the inclinedside cutters; 3, a portion of the cross roller cutter; 4 a lubricantholder in the form ol' an elongated tube arranged eoaxially with thedrill stem and seated by its screw threaded lower end upon a socketmember 5 which in turn is seated in the upperftnd of the reamer block 6which carries reamer cutters?. rThe flushing fluid 'forced down throughthe drill stem passes along the annular space 8 between the drill steinand the lubricant holder 4, and thence through ports E) and a centralpassage 10 of the socket member and through the central channel 1l ofthe reamer block. from whence it passes through passage-s 12 in the.drill head to the cutters to flush the same, as is well known yto theseskilled in the art.

The socket member 5 is provided with passages, one et' which isindicated in dotted lilies at 1?, tor conducting the lubricant from theholder It by way of tlh` annular passage 14 to suitable conduits that)cad the lubricant to the parts to be lubricated, such for instance, asthe passage 15 which directs the lubricant to a central chamber 16 .fromwhence it is distributed through passages such as 17 to the bearings ofthe cutters. Other passages such as 18 conduct the -lubricant to thejournal pins of the -rearncr cutters 7. A

At 19 is shown a piston inthe lubricant holder and when this is forceddownwardly the lubricant is-forced through'the various passagesmentioned to the parts to be lubricated. l

For forcing the piston 19' downwardly, a. portion of the flushing fluidis forced into the top of the lubricant holder above the l piston 19 andin order to accomplish this result a pumping arrangement is employedwhich includes apiston 20, a. cylinder 21 within which the pistonreciprocates coaxially of the lubricant holden The cylinder 2l iscarried by a block 22 which is screw threaded into the upper end of thelul bricant holder'4. This block or partition member has a screwthreaded seat at 23 receiving the shell of a chamber 24 which isarranged as a coaxial extension of the lu` bricant holder, the saidchamber being closed at its upper end by a cap Amember 25 screw threadedinto connection therewith. At 26 there is an inlet for flushing fluid tothe chamber 24, this inlet being protected by a screen 27 of anysuitable form held in place by a screw threaded ring 28. The flushingwater passes to the chamber 24 through a port 29 after passing throughthe screen.

The piston 2O is connected with a rod 30 the upper end of which isreduced and is slidably guided at nl in the cap member 25. On this rod aweight 32 is mounted to have slight longitudinal movement in relation tothe rod and the rod is provided with a flange 33 at or near its lowerend, and a nut 34 at its upper portion between which and the collar theweight 32 is arranged, it being noted, as above stated, that the weightis loosely mounted on the stem and can have slight longitudinal movementbetween the nut 3:1- and the collar 33. At each end of this weight aspiral spring is arranged as shown at 35, each of these springs bearingat one end upon the weight and at its opposite end upon the adjacentstationary structure such as the block 22 and the cap member 25. Theweight is of somewhat smaller diameter .than the interior diameter ofthe chamber 24 and it is of less length than the said chamber so thatroom is provided for longitudinal movement of the stem or rod togetherwith the weight, in relation to the chamber containing these part-s.

The piston 2() is provided with an inlet port'36, extending mainlycoaxially of Athe piston and having a lateral branch at its upper end sothat this piston will act in the` nature of au inlet valve whereby whenthe piston is raised so that the mouth 36 of the port 36 is above. theupper surface of the block 22, then the flushing liluid vwill pass lfromthe chai'uber 2li into the cylinder 2l, whereas when. the piston islowered, as shown in Fig. 2, the inlet ofthefiushing fluid will be cutoil' from the. cylinder 2i.

The cylinder )'u'oviiiled with a discharge valve and as an example ofthis a valve 87 is shown adapted to be seated at 37 against the block 22and this valve' is pressed upwardly to closed position against this seatby a spring 23S, the lower end of which rests upon a screw plug 39seated in the. block 22. The discharge valve is guided in the block, but'it controls the discl-iargc port leading from the cylinder 2l.

The fluid ailier passing this discharge valve, enters the top of thelulfiricant holder by way of the port 4l).

In the operation otthe apparatus the drill stem derives a verticalribratory movement due to the roller cutter at the lower end thereofrunning over the. uneven surfaces being cut, or when ruiming oversmoother surfaces the vibratory action of the drill stem will be d uc tothe formation of the cutters which are provided with teeth ontheirperipheries supposingl the parts to be in the position of Fig. 2 andwith the drill stem vibrating vertically and supposing the drill stem iset the uppeiI endv of its vibratory stroke, the 'discharge valve will beclosed and the combined pump iston and inlet valve 20 also will beclosed. hen the upper limit of this vibratory stroke of the apparatus isreached and the downward strol-'e begins` the weight 32 will not respondimmediately to this change in direction of the stroke, diie to itsinertia or momentum,

. and hence it will assume a position relative to the. drill stem inwhich it will hc raised so as to uncover the port 36', and thiswillallow the water to tlow'into the, pump cylinder from the chamber 24. itbeing noted that the relative up stroke of the piston 20 while thedischarge valve is closed'` creates a vacuum under the piston 2O in thechamber 21. Now when the movement reverses, that is by the drill stemrising, the weight with its piston will again lag in respect to themovement of the stem, thus assuming a lowered the piston 20 to force theWaterfrom the cylinder 21 past the spring pressed discharge valve 37which will open durin;f this pumping stroke of the. piston 20 and theweight 32,

and thus the water will be forced from the the source from which thewater is derivedto be forced by the pump into the upper end ofthelubricant, holder and it will be understood that the above specificationanddrawings are presented in an illustrative way and are not to beconsidered as restrictive upon the scope of the invention, which isdefined by the appended claims. The springs at' opposite ends of theweight cushion 'the stroke of this weight and also aid in moving theweight in opposite directions, for instance, when the weight movesupwardly relative to the drill stern the upper spring is compressed andreacts at the proper time 'to force the weight with its rod and pistondownwardly and the saine is true when the downward movement of theweight takes place, namely, it compresses the lower spring and uponreversal of the. action this spring aids 'in throwing the weightupwardly.

As before stated, the weight has some slight movement freely on the rod30 so that in its action in either direction it will.

' movements is out ot time with the vibrations of the drill stem andhence the pumping zaction results, this being due to the relativemovement between the lubricant holder and the parts attached thereto andthe weighted piston, it being understood that the lubricant holder andits attached parts conform in their vertical vibratory movements exactlywith those of the drill stem because they are permanently attachedthereto.

The fluid for operation in the pump can be derived from outsidethe-drill stem.

' What is claimed is 1. In deep Well drilling apparatus, a drill stem,cutters, a lubricant holder, and a pump for forcing the lubricant Atothe parts to be lubricated, carried 'by the apparatus and.

operated by the vibration of the apparatus, due to its'workingagainst-the material being' cut, said pump having a piston reiproJ yposition in relation to said stem, and causing\cating relative to thelubricant holder substantially as described.

stein, cu'rfzers, e lubricant holder, anda pump for, forcing thelubricant to the parts to be lubricated, carried byl the apparatus andbaring a pisicnl reciproeated relaive to the lubricant holder by. thevertical vibration of tlfe apparaus, due to its Working against thematerial being cut, substantially as described. v

3. In deep well drilling apparatus, a-drill stern, toothed rotarycutters giving to the drill stern vvertical vibratory motion during thecutting operation, a lubricant holder and a pump for forcing thelubricant to the cut ter bearings having a piston reciprocated,

relative to the lubricant holder by the vibraicry motion of the drillstein, substantially as described. y

d ln deep 'well drilling apparatus, c. drill stem, entiers, a lubricantholder, and a pump for forcing' the lubricant no the paris to belubricated, carried by the apparatus and operated by Idie Vibration cithev ap par-eins, due to its Working against the inaterinl being cui,seid pump orcing duid into ille holder, substantially as described.

' being disposed coamally with the drill stem and the lubricant bolder,substantially as described. f

7. ln combination in deep Well drilling apparatus, a drill stem, alubricant holder arranged coaxially with the stem, a pump a dischargevalve for said cylinder opening into the lubricant holder, a. pistonoperating in the cylinder, means for the in iet or fluid into thecylinder when the piston rises,ja Weil ht connected with the piston,said weight eing operated vertically by the Vertical vibration to whichthe drill. stem is subjected while working in the well, to therebyoperate the piston, substantially as described. 1

8. Irl-combination in deep Well drilling apparatus, a drill stem, alubricant holder arranged coaxially with the stem, a pump cylinder, adischarge -Valve for said cylinder ,opening into the lubricant holder, aiston cper'atingin the cylinder, means for tie in-' A. let ci? iluiuinto the cylinderiwhen 'the pision.

rises, a Weight connected Vwith the pistou, said weight being-operatedvertically by. the vertical vibration' to which the drill stern issubjected While working in the Well, to

' as described,

thereby lopende the piston, the said duid*l inlet means consisting of aport through 'the piston which when the piston israised receives thefluid to be forced and directs it into the cylinder, substantially esdescribed.

.9. ln combination in deep Welldrilg l0. ln combination in deep Welldrilling apparatus, a drill stem, a lubricant holder,

arranged coax'ially with the stem, a pum-.p cylinder, a discharge valvefor said cylinder opening into the lubricant holder, a pistou operatingin the cylinder, means for the inlet ci duid into the cylinder when thepision rises, a Weight connected with the iston, said weight beingoperated vertically y the vertical vibration to which the drill stem issubjected while working in the. Well, to thereby operaie the piston, anda spring at',

each end of the Weight "to cushion the action 'o the same and to forcesaid Weight longitudinally, substantially as described, i

l1, lin combination in deep Well drilling apparatus, a drill stem,cutters, a lubricant holderarranged ccaxially Within the drill pistonvand cylinder arranged stem, a pump lq coaxially with and at the upperend of lubricant, holder, a Weight connected with the upper end of thepiston, .a chamber in which said Weight moves, a. port for inlet offluid to said chamber, a discharge valve for controlling the outlet. of-iuid from the cylinder to the lubricant holder, and means for the inletoi fluid to the cylinder from the said chamber, substantially asdescribed.

12.(ln combination in deep Well drilling apparatus, a drill stem 'havingvertical vibration, a lubricant holder Within the stem, and a pumpoperated from the vibratory movement oi' the stem, saidpump consistingof a cylinder and piston and means for the inlet and discharge of fluidto the cylinder isc to be `forced into the-upper end of the lubri caneholder, a rod connected with the piston,

Va weight mounted on said rod to have movement along the rod, and meanson the rod affainst which the Weight abuts to edecz a hiimrner blowthereon, substantially as de scribed u 0 i3. :in combination in deepWell drilling ports to be lubricated, .a pump operated bly the vibrationof the drill stem, said .pump

lil

forcingr fluid into the lubricant lioldcrabovc the piston, substantiallyas described.

14. ln combination in deep Welldrilling apparatus, a drill Stem,- alubricant holder arranged coerxially therewith, a block closing theupper end of the lubricant holder, a chamber the shell of which issupported .on the block, u Uston rcciprocating in the block and having arod extended through the Said chamber, n. weight mounted on the rod,means for the inlet of fluid into ille top of thc chambcr and means forthe inlet of Snfl fluid from Said chfimhcr to the cylinder in mimosawhich the piston rcciprocates, and a. clis- -of the lubricant holder,Substantially -as clescribcd.

15. In Conxbination in deep well drilliiig apparatus, a drill stem., acoaxially arranged lubricant holder, and a p'ump opcratcdzoy thevibration oi the drill stem, said pump taking the. Bushing! water 4fromthc drill stem sind forcing' it. into thc ripper end or" the lubricant'holdcr, Substantially as (lcln testimony wiwi-cof l :iilix mvsig'xiaturc.

SYVAL) DUDA.

